PTFE in Brief

Types of PTFE

Virgin PTFE

PTFE material is highly resistant to heat, as well as attack from most chemicals. The electrical properties are excellent. Though it’s high impact strength, its resistance to wear, durability and creep resistance are low as compared to alternative engineering grade thermoplastics. Like many other plastics it properties are often improved by adding fillers like glass fibre, carbon, and/or graphite.

25% Glass Filled PTFE

25% Glass filled PTFE is used to improve the creep resistance of PTFE over all temperature ranges, while still allowing some compression required for sealing in both gaskets and valves. Improved wear behaviour is exhibited, while there is little effect on the electrical properties, as glass fibre is an insulator. 25% Glass has an exceptional resistance to water. Still giving excellent chemical stability, PTFE +25% GF has better thermal conductivity and coefficient of friction when combined with MoS2 or graphite. (Information from Plastim Ltd)